-123=3(1+6x)

Solution for -123=3(1+6x) equation:

Simplifying
-123 = 3(1 + 6x)
-123 = (1 * 3 + 6x * 3)
-123 = (3 + 18x)

Solving
-123 = 3 + 18x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-18x' to each side of the equation.
-123 + -18x = 3 + 18x + -18x

Combine like terms: 18x + -18x = 0
-123 + -18x = 3 + 0
-123 + -18x = 3

Add '123' to each side of the equation.
-123 + 123 + -18x = 3 + 123

Combine like terms: -123 + 123 = 0
0 + -18x = 3 + 123
-18x = 3 + 123

Combine like terms: 3 + 123 = 126
-18x = 126

Divide each side by '-18'.
x = -7

Simplifying
x = -7